Drop hammer



I F b; 13, 1923,

E. ENDERES.

DROP HAMMER. 7 man 4; 1921.

conventionally, and" my improvements at -1justment.i sthrongh a Wide range governed a nnns'n lsnnnnns; on ABBERT tine, MINNESOTA.

Toal labi ovn it may com/em! known that I, ERNST Ennnnnsya eiti-x zen of the Umted St-ates t Amemca, and

5 Minnesota, have ihyentedla new and useful Improvement in Drop Hammers; o't whlch the followlng is a specification; im roved-meansfor throwingoflo ndiseom V L? hammer. y l A further ob ect otthls .lnv'entlfonns to gageinent by a drop haininergin its u ward travel fol o automatically and quickly throxta 511g off on dxsconneetlng the h'ttnl g dexnces Ufromsaldhammer. l

l A furtheryobject of estimation s to provide nee-ans forcnshioningthefimpaCtf a dI'op hammeron lts upward stroke W1th point, in the, upward-travel f a drop haIh- M25 invention lconsistsin the construction," ar-- rangeme'nt and eomhinationflof elements hereinafter set forth, pointed out in my elaiihs and illustrated by the aooompanying drawing; innvllicll 'l f h Figure Lisa front elevation andfFigufe 2 asidefeleyation {of adrop hammer, shown" Fol purposes ,of illustration I have sehammer mechanism" and shownthe same con yentionally as afyehi cle for exhibitingmy njnpro-yexnents and illustrating theif relation to elements now ooinlnonand ell known.

ffont ilifting rod, a frontiiod guifcle and l I28 aftreadlegall of Whicheleinentsape com "fmen.andwellknoiyn and are adapted front l f theprlon art aliclln aoliines on theinalrket nectinn-k the liftingineehanism from a ch'opf on an enlall'gedfl scale onthe indicated 1 111g forwardly. Bfaekets in contact with and l V from the frontiaces provide improved means adapted for enfrom tl'lroughsaid longi a y m u ted Vertically and p a The object of this inyentlonis to provide 1921, Serial No.

and "Innse; and it is assumed that the eon strnetioljl, pnrposes*anddunetions of these elements arewell established and requireno detaileddescription at this tiine. Left and right guides29f80, fOl'DlGClWltll tndinal T-slots 31, respectively, are arallel with each other onfthe front faces of the left and fight nprlght respectively the "slots therein open- 65 '33, 34 are mounted projecting I forwardly ofthe guides 29, 176: spectlvely'and areadjustahly secured toysaid guides by bolts 35,36,hayingtheir headsin f said slots and extending :fogfyvarclly there-I brackets; A ha1i37, pref- 5 erahly inadelof wood, is mouncaLhm-ima tally andeonneets the brackets 33, 34h end portions of said ha Ireneilving' outei endjdotc- 7 5 tlons ofjthe bQlts35, 36;; VVasherslane mounted on and fixed to end portions of, the

A further *objeet o1"- this invention fi'sl to 1 piovlde iinprovedmeans torjad ustlng thef hnm me'nZZQ" The bar 37 manually as to altitude by looseninggandl-m justahly monnted on the fiont y y y t m a lamp 39andsaid elannp' may selected from the market atype of drop l on the front rod, there being a tween the altitudinaladjnstnient ofthe stud l peet ively, 171a j die holder,

brackets 33, min, at whlch said hammer W111 engage P throw-01f deylces adapted to dlsconnect the bar 37 around the bolts 35, 36, the innermost most Washers l'eeeiviilg Contact; and weal? of the nuts 36 0n the bolts With bar It :is I

35 cla thehi'aekets se, 34. zlnd bar 3*? to the 1 glides-29, SOso that saidbar may be held rigidly; at any desired and selected altitude relativeto theQdie) l'loldel' 17mm also have; su ch relation to l the vertical lengthof the may again tightening the bolts 35, 36 and said ada by thejlength of the open slots 31, 32 in the guides 29, 30. IA stud 38,1or-stub axle, is ad- I'ocl 26fhy mannally i eleasedand tightened? adjusted atany desired and selected point relation be or stub axle 38 and the altitu dinal adjustmentof the bar A lever 40 is fulcrum'ed adjaeentits center and is free to, oscillate on I" the stud o1" stub axle 38. The lever 4L0 pref erahlyfis made of WoodfThe leverll is a1! ranged at right angles to and one endpoftio n thet'eof extends across the vertical plane I of the 13211337 and a keeper41, or yoke, is

mounted 011 said bal 3'7 and extends over and jencloses loosely threesides not said lever,

That end portion of the lever LOopposite the half extends across the vertical? path 7 36 @djustably to be adjusted of the hammer 22 at one side of the lifting boards 10, 11 and between said lifting boards and the right upright 16. Normally the rear end portion ofthe lever iO'sligl'itly weanplate 42 is mounted on and'extendsacross the top'of the bar 37 immediately below the outer end portion oi the lever 40 and said wear" plate is adapted to contact at times with" theleverand'save the wooden barrf'rom we-a r;

It is to'be understood that the hammer is lifted by engagement of the front lifting.

rollerf23'and its mate the rear lifting roller, not shown, in the rotation of the geared shaftsdrivenfby the pulleys 12,13, and that said-front lifting roller 23' is thrown off or disconnectedfroni the'li'ftiing boards 10, 11

by upward; movement of the arm 25 engagedby the upper end o'fthe front rod'26. It follows, therefore, that the stroke of thehammer'22 is determined by the dis-- tance it is" raised from the die holder 17 before the: throw-o'fl? function is applied. IIllC'Q'R'djllStIllBllh of the studor stub axle 38"-a'ltitudinally on the front r'od26 and a corresponding adjustment of the bar 37 al-titudnially' locates, governs and deter mines the point of contact ofrthe hammer- 22 with theinner endportion of the lever 40. When the liiillllDQTQQ, ingits upward travel, contacts with the inner end portionof jthelever 40 it? oscillates said lever so that the forward end portion thereofcontacts with the "bar 37' through the medium of the interposed wear'plat'e 42; Further oscillation of the' lever lO being stopped by contact'witli the bar 37 the front rod 26 is raisedth'roughthemedium of the stub axle I 38 and clamp 39 acted upon by the central po'rtion of thelex'zer' 40.' Such raising of the "front rod; 2 6'lifts the arm 25 and disconnects the front roller 23 from thelifting boards IOLII; The Contact of the hammer 22" with the lever 40 is by impact and is forcible and speedy and the reaction of such impact through said lever, the bar 37,; stub axle 38and clanip39 is substantially immediate, prompt and very quick'to' the end of raising the" front rod 26 and arm 25 and throwing ofli the front roller practically instantaneously' with said impact;- Herein lies the desirability and advantage of making the bar 37 and lever 4E0 of wood in that the impact of the hammer with the lever and the-reaction of the lever" on-the bar 1s cushioned, tempered and softened. Utilizing.

wootrftr th'elevei" and bar avoids and minnnize's shock on all of the parts susceptible of receiving any reaction whatever from such impact. llxpcriment with a machine equipped with the attachments herein illustratedand described have shown that the use of the wooden members indefinitely cxtendsth'e period of usefulness and indciinitely and to a large extent minimizes the necessity of replacement and repairs in those )arts receivin the im )act directlv or l n by-reaction. I

lVhen' it is desired to change the stroke of the hammer 22 the bar 37 and stud or stub axle 38 are proportionately adjusted altitudinally said elements coacting to determine the range of such stroke: through the interrelationtherewith of the lever 40.

Except asabove' pointed out, modified and varied by the use and operation of the attachments specifically described, the construction, operation and use of the other elements illustrated and any other elements necessary and not illustrated, are the same as atpresent.

I claim as-my invention 1. In a drop hammer provided withspaced uprights, a hammer adapted for reciprocw tion between said; uprights. lifting boards carried by the hammer and lifting devices adapted to act on said lifting boards at' times, the combination with said hammer and lifting devices of a wooden hazr vertically adjustably mounted on said, uprights, a tripping rod acting. on said lifting devices, and a lever carried by said tripping rod and extending across theplane of: and adapted to engage said ba-r and also extending across the pathofand a'daptedto be engaged by said hammer in its upward movement.

2 Iii-a drop hammer provided with spared uprights, a hammer adapted for reciprocation between said uprights, lifting boards at times carried by the hammer audlifting devices ada-pted to'act on said lifting boards, the combination with said hammer and liftingidevices of a wooden bar vertically adjustably mounted on saidupiights, a tripping rod acting on said liitingdevices, and a woodenlever carriedby said tripping. rod and extending across the path of and adapted to engage said bar and also extending across the path of and adapted to he engaged by said hammer in its upward movement.

3. In a drop hammer provided with spaced uprights, a hammer adapted-for reciprocation between said uprights; lifting. devices adapted to raise said hammer. and throw-oil devices adapted-to suspend the lifting dc vices, the combination with said hammer and throw-oil devices of a wooden bar vertically adjustably mounted on said urn'ights, said throw-oil devices comprising a tripping rod acting on said li'tting. devices, a wooden lcvcr carried-by said tri ')ping rod and cxtemling across the plane of and adaptcdio engage said bar and also extending across the path CID of and adaptedto be engaged by said ham; nier inits upward movement, and a wear plate on sa d bar adapted to contact with the lever. a j j I t 4:.QI11 a drop hammer mechanism having nspaced uprights, a hammer adapted for reciprocation between them, lifting devices adapted to, raise said hammer and throW-oit devices adapted to suspend the lifting de- @110 vices, thejcombination with said hammer and throw-ofl devices ofspaced parallel guides i'formed with T-slots mounted on said upguides, a wooden bar rights, brackets adj ustably mounted 011 said connecting 1 sald brackets and extendmg across the path of travel of the hammer, bolts extending through said brackets and barand having their heads within said T-slots, and a wooden hammer and bar, respectively, whereby engagement of the hammer with oneend of lever carriedby said throw-oft devices and extending; at 1ts ends across and above the said lever and engagement of the other end of said lever with said bar reacts on and operates saidll'ttlng devlceswn In a drop hammer, the combination with the hammer, means for lifting the same 1 and a front liftingrod adapted to act on the lifting means at times, of vertical guides, a wooden bar connecting and ad ustable altitudinally on said guides, and a wooden lever fulcrumed onand adjustable altitudinally relative to said front lifting rod, said lever extending across and above the hammer and bar and adaptedto be engaged by i the hammer ttlflCLllO engage the bar to the it end of raising said front lifting rodi:

(5.111 a drop hammer, the combination 3 with the hammer, means for lifting the same and front lifting' rod adapted to act on the lifting means at times, of vertical guides, a wooden bar connecting and adjustable altitudinally on said guides, a keeper on said of said rod, a wooden lever fulcrumed on and ad ustable altitudlnally W1th sald stub axle, sald lever extending across and above the hammer and bar and adapted to be enbar, a stub axle on and adjustable vertically gaged by said hammer and to engage said keeper and bar to the end of raising, said with the hammer, lifting means therefor,

and a front lifting rod adapted to act on the liftmg means at times,ot' vertical guides, a wooden bar connecting and adjustable altitudinally on said guides, a wooden lever fulcrumed adjacent its center on and adjustable altitudinally relative to sald' front liftmg rod, said lever extending across and abovethe hammerlat one end and above and across the bar at the other end and adapted to be engaged by said hammer and to engage sald bar to theend of ralslng said front lifting rod, a keeper or yoke carried by said bar and spaced therefrom and adapted loosely to embrace the crossing portion of said lever, and a Wear plate on saidlbar within the vokeand adapted t o-receive the impact of the lever, there being a range of movementof the lever end between the keeper and wearplate. Signed at Des Moines, in the countyof Polk and State of Iowa, this lfith day of March, 1921. jj j nnns'r ENnEnns. 

